Mineral compound.



vide simple, cheap,

COATING OR PLASTIC PATENT OFFICE.

MCKENZIE ARNN, OF BRISTOL, VIRGINIA.

MINERAL COMPOUND.

SPECIFICATION formingpart of Letters Patent No. 703,516, dated July 1, 1902.

Application filed October 7 1901. Serial No. 77,911. (No Sp imens.

IO to which it appertains to make and use the same.

The object of my invention is to produce from what is commonly regarded as aworthless by-product of an iron-furnace or the like.

15 a substance which by proper treatment will be found to possess immense value and utility, as will be hereinafter more particularly pointed out.

A further object of myinvention is to proand reliably eflicient means whereby various pleasing characteristics will be imparted to the substance which I thus produce from slag.

Other objects and advantages will be made clearly apparent from the following specification.

In view of the fact that my invention comprehends a certain specified process of manipulation I deem it unnecessary for the pur- 0 poses of this application to prepare drawings in illustration of the mechanical means adopted to secure a commingling or intimate association of the various elements employed by me in the practical demonstration of my in- 3 5 vention, and I will therefore proceed at once with the description of the preferred formulas and manner of using the ingredients thus individually specified. As is well known, the product of an iron-furnace or thelike, termed 4o slag in common parlance, which term, however, is broadly used to designate the residuum of ores treated by intense heat, is in itself a crude substance, which heretofore has often been regarded as a useless iucumbrance ofthe furnace where it is produced.

Specifically referring to the special process of treatment which I have adopted for crude, sla or the by-product of an iron-furnace or the like, I W1 ase my escript on upon the assumption that one hundred tons of the crude slag is to be treated, and I shall thereft re prepare the formula showing proper pro- MZ L.

I f b portion of the several ingredients to be used, .with the understanding that such proportion is relative to one hundred tons of the crude slag, as follows:

For the treatment of one hundred tons of crude sla I use six hundred pounds chlorid sodium, Isalt,) two hundred and fifty pounds line, ve ga ons sulfuric acid twelve pounds hydrochloric acid, ten gallons coal-tar, ten poun s pu verize mica ten pounds'talc, ten pounds kaolin clam the foregoing lngredients sufficient soft water is added necessary to produce a free or oose plastic condition of the mass. This plastic mass of matter is then introduced into a vat formed of suitable material in order that it may withstand the intense heat of the molten slag, which latter is introduced through a suitable opening in the bottom of the tank after the composition introduced therein. The result will be that the molten mass of slag, amounting to one hundred tons, as above specified,wi1l become thoroughly incorporated with the plastic mass. After the ingredients have thus been thoroughly commingled with each other and allowed to stand and still kept at the same de gree of temperature a precipitation of the heavier particles of the mass will take place. After the contents of the tank have become cooled the same are turned out upon the ground and the lgyemtjonof'themass HIE-rated from the upper part thereof. Both parts are then separatelypulverized, and the lower portion of the substance may be treated by any of the well-known processes for the separation of any remaining metallic sub stances therein contained. The upper rportion of the mass after being f nely pulve zed may be used as follows: To one hundred pounds thereof I add five pounds of coal-tar, one pound of sulfuric acid, and five ounces of hydrochloric acid, and the resultant product wi e can a very desirable and valuable commercial article, inasmuch as it may be incorporated in any of the well-known ways with ordinary cement in a proportion of twenty per cent. of m com ositiou to eighty per cent. of ordin r cement. After the upper portion of the mass has been pulverized, as above set forth, and incorporated with the coal-tar, sulfuric acid, and hydrochloric acid and thus thoroughly commingled with the cesubstance, which may 5 uable and durable n" or such sub as stationary washtubs, sinks, or the like, may also be readily and cheaply formed therefrom, and deeming it unnecessary to more fully particularize the various uses of myinvention I will dispense with further reference plasteri stance may be mold'edftjrotfierwise shaped\ to the details.

into bricks, paving s to nes, into files or slates, and will thus constitute a mos to valuable and permanent form of roofing. The plastic material may also begpglipd dipegtly as roofing, inasmuch as th eeting ordi 'iiaiiTy used in roofing may will use it upon the walls of a building.

: cracks or crazing, and the result will be tha the roof will comprise one continuous shee of extremely durable material.

It will be difiicult to enumerate the many and varied uses to which my invention may be applied, though it may be stated that in addition to the enumerated uses above so forth it will also be desirable for building partition-walls direct from the plastic material after it has been added to a proper pro- The walls thus formed will be sound and waterproof as well The plastic material may be molded into doorsteps, stairornamental railings, cornices, &c., as

Water-holding receptacles,

o portion of common cement.

as being indestructible by fire.

ways, 5 will be obvious.

or may be formed s which will take the place of shi be replaced by laths in order that the plastic substance may be spread thereon the same as the plasterer t is found by experiment and practice that when the plastic-material has thus been spread or distributed as plaster it will dry free from Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is- I The herein-described method of treating slag from furnaces, consisting of the addition to molten slag, of salt, lime, sulfuric acid, hydrochloric acid, coal-tar, pulverized mica, talc, kaolin, clay and water, the said ingredients being combined with slag substantially in the proportions and in the manner set forth, the separating out of the lighter portion of the mass and the subsequent pulverizing of the compound thus formed after the same has become cold and the mixing with each one hundred pounds of the pulverized mass thus produced, of five pounds of coaltar, one pound of sulfuric acid and five ounces of hydrochloric acid and the mixing of the same with ordinary cement in the proportion of twenty per cent. of said product with eighty per cent. of ordinary cement as and for the purpose set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

MCKENZIE ARNN.

Witnesses:

W. T. FITZ GERALD, WM. A. EASTERDAY. 

